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Digital Root Worksheet

Vedic maths trick 12: Digital roots — check any answer · Set 847 · 40 sums
TalentJR

The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.

NameDateTime takenScore ___ / 40
  1. 1.Digital root of 7416 =
  2. 2.Digital root of 12 × 67 =
  3. 3.Digital root of 49700 =
  4. 4.Digital root of 10014 =
  5. 5.Digital root of 27559 =
  6. 6.Digital root of 77418 =
  7. 7.Digital root of 60 × 72 =
  8. 8.Digital root of 2345 =
  9. 9.Digital root of 31915 =
  10. 10.Digital root of 39 × 13 =
  11. 11.Digital root of 29 × 75 =
  12. 12.Digital root of 44 × 30 =
  13. 13.Digital root of 43 × 89 =
  14. 14.Digital root of 22 × 64 =
  15. 15.Digital root of 31887 =
  16. 16.Digital root of 27241 =
  17. 17.Digital root of 99 × 81 =
  18. 18.Digital root of 69903 =
  19. 19.Digital root of 84002 =
  20. 20.Digital root of 81 × 77 =
  21. 21.Digital root of 71 × 80 =
  22. 22.Digital root of 76 × 76 =
  23. 23.Digital root of 25 × 29 =
  24. 24.Digital root of 96699 =
  25. 25.Digital root of 63 × 58 =
  26. 26.Digital root of 12 × 97 =
  27. 27.Digital root of 77 × 49 =
  28. 28.Digital root of 26 × 20 =
  29. 29.Digital root of 92361 =
  30. 30.Digital root of 73789 =
  31. 31.Digital root of 44908 =
  32. 32.Digital root of 86176 =
  33. 33.Digital root of 73 × 56 =
  34. 34.Digital root of 95032 =
  35. 35.Digital root of 43 × 81 =
  36. 36.Digital root of 52 × 88 =
  37. 37.Digital root of 22 × 35 =
  38. 38.Digital root of 71346 =
  39. 39.Digital root of 99998 =
  40. 40.Digital root of 18 × 47 =

Answer key

  1. 9
  2. 3
  3. 2
  4. 6
  5. 1
  6. 9
  7. 9
  8. 5
  9. 1
  10. 3
  11. 6
  12. 6
  13. 2
  14. 4
  15. 9
  16. 7
  17. 9
  18. 9
  19. 5
  20. 9
  21. 1
  22. 7
  23. 5
  24. 3
  25. 9
  26. 3
  27. 2
  28. 7
  29. 3
  30. 7
  31. 7
  32. 1
  33. 2
  34. 1
  35. 9
  36. 4
  37. 5
  38. 3
  39. 8
  40. 9

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